cpu.h - mozsearch

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// Copyright (c) 2012 The Chromium Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

#ifndef BASE_CPU_H_

#define BASE_CPU_H_

#include <string>

#include <tuple>

#include "base/base_export.h"

#include "build/build_config.h"

namespace base {

#if defined(ARCH_CPU_X86_FAMILY)

namespace internal {

// Compute the CPU family and model based on the vendor and CPUID signature.

// Returns in order: family, model, extended family, extended model.

BASE_EXPORT std::tuple<int, int, int, int> ComputeX86FamilyAndModel(

    const std::string& vendor,

    int signature);

}  // namespace internal

#endif  // defined(ARCH_CPU_X86_FAMILY)

// Query information about the processor.

class BASE_EXPORT CPU final {

 public:

  CPU();

  enum IntelMicroArchitecture {

    PENTIUM,

    SSE,

    SSE2,

    SSE3,

    SSSE3,

    SSE41,

    SSE42,

    AVX,

    AVX2,

    MAX_INTEL_MICRO_ARCHITECTURE

};

  // Accessors for CPU information.

  const std::string& vendor_name() const { return cpu_vendor_; }

  int signature() const { return signature_; }

  int stepping() const { return stepping_; }

  int model() const { return model_; }

  int family() const { return family_; }

  int type() const { return type_; }

  int extended_model() const { return ext_model_; }

  int extended_family() const { return ext_family_; }

  bool has_mmx() const { return has_mmx_; }

  bool has_sse() const { return has_sse_; }

  bool has_sse2() const { return has_sse2_; }

  bool has_sse3() const { return has_sse3_; }

  bool has_ssse3() const { return has_ssse3_; }

  bool has_sse41() const { return has_sse41_; }

  bool has_sse42() const { return has_sse42_; }

  bool has_popcnt() const { return has_popcnt_; }

  bool has_avx() const { return has_avx_; }

  bool has_avx2() const { return has_avx2_; }

  bool has_aesni() const { return has_aesni_; }

  bool has_non_stop_time_stamp_counter() const {

    return has_non_stop_time_stamp_counter_;

  bool is_running_in_vm() const { return is_running_in_vm_; }

  IntelMicroArchitecture GetIntelMicroArchitecture() const;

  const std::string& cpu_brand() const { return cpu_brand_; }

 private:

  // Query the processor for CPUID information.

  void Initialize();

  int signature_;  // raw form of type, family, model, and stepping

  int type_;  // process type

  int family_;  // family of the processor

  int model_;  // model of processor

  int stepping_;  // processor revision number

  int ext_model_;

  int ext_family_;

  bool has_mmx_;

  bool has_sse_;

  bool has_sse2_;

  bool has_sse3_;

  bool has_ssse3_;

  bool has_sse41_;

  bool has_sse42_;

  bool has_popcnt_;

  bool has_avx_;

  bool has_avx2_;

  bool has_aesni_;

  bool has_non_stop_time_stamp_counter_;

  bool is_running_in_vm_;

  std::string cpu_vendor_;

  std::string cpu_brand_;

};

}  // namespace base

#endif  // BASE_CPU_H_